Arrays - Building Java Programs: A Back to Basics Approach - page 497

3. Write a program that plays a variation of the game of Mastermind with a user. For example, the program can use
pseudorandom numbers to generate a four-digit number. The user should be allowed to make guesses until she gets
the number correct. Clues should be given to the user indicating how many digits of the guess are correct and in the
correct place and how many digits are correct but in the wrong place.
4. Write a program to score users' responses to the classic Myers-Briggs personality test. Assume that the test has 70
questions that determine a person's personality in four dimensions. Each question has two answer choices that we'll
call the “A” and “B” answers. Questions are organized into 10 groups of seven questions, with the following repeat-
ing pattern in each group:
• The first question in each group (questions 1, 8, 15, 22, etc.) tells whether the person is introverted or extro-
verted.
• The next two questions (questions 2 and 3, 9 and 10, 16 and 17, 23 and 24, etc.) test whether the person is guided
by his or her senses or intuition.
• The next two questions (questions 4 and 5, 11 and 12, 18 and 19, 25 and 26, etc.) test whether the person focuses
on thinking or feeling.
• The final two questions in each group (questions 6 and 7, 13 and 14, 20 and 21, 27 and 28, etc.) test whether the
person prefers to judge or be guided by perception.
In other words, if we consider introversion/extraversion (I/E) to be dimension 1, sensing/intuition (S/N) to be dimen-
sion 2, thinking/feeling (T/F) to be dimension 3, and judging/perception (J/P) to be dimension 4, the map of ques-
tions to their respective dimensions would look like this:
1223344122334412233441223344122334412233441223344122334412233441223344
BABAAAABAAAAAAABAAAABBAAAAAABAAAABABAABAAABABABAABAAAAAABAAAAAABAAAAAA
The following is a partial sample input file of names and responses:
Betty Boop
BABAAAABAAAAAAABAAAABBAAAAAABAAAABABAABAAABABABAABAAAAAABAAAAAABAAAAAA
Snoopy
AABBAABBBBBABABAAAAABABBAABBAAAABBBAAABAABAABABAAAABAABBBBAAABBAABABBB
If less than 50% of a person's responses are B for a given personality dimension, the person's type for that dimen-
sion should be the first of its two choices. If the person has 50% or more B responses, the person's type for that
dimension is the second choice. Your program should output each person's name, the number of A and B responses
for each dimension, the percentage of Bs in each dimension, and the overall personality type. The following should
be your program's output for the preceding input data:
Betty Boop:
1A-9B 17A-3B 18A-2B 18A-2B
[90%, 15%, 10%, 10%] = ISTJ
Snoopy:
7A-3B 11A-9B 14A-6B 6A-14B
[30%, 45%, 30%, 70%] = ESTP
5. Use a two-dimensional array to write a game of Tic-Tac-Toe that represents the board.